Outlook Diagram; Installation Guidelines; Installing The Domestic Hot Water Tank; Connecting The Water Circuits - Rotex RKHWE300A3V3 Manual De Instalación

Safety devices
The domestic hot water tank relief valve connections
may not be used for other purpose.
Do not install heaters without thermal cut-outs.
Thermal protector — The booster heater in the domestic hot
water tank is equipped with a thermal protector. The thermal
protector is activated when the temperature becomes too high.
When activated, the protector has to be reset on the domestic
hot water tank by pressing the red button (for access, remove
the electrical box cover).
The electrical box lid must only be opened by a
licensed electrician.
Switch off the power supply before opening the
electrical box lid.
Pressure relief valve — A pressure relief valve (field supply) in
accordance with relevant local and national regulations, and with
an opening pressure of maximum 10 bar must be connected to
the pressure relief valve connection.
Water may drip from the discharge of the pressure relief valve
device.

Outlook diagram

Outlook diagram, see figure 2.

Installation guidelines

Keep in mind the following guidelines when installing the domestic
hot water tank:
The installation location is frost-free.
Take care that in the event of a leak, water cannot cause any
damage to the installation space and surroundings.
Make sure to make the piping in size 1" or more (and reduce to
3/4" at the inlet of the tank) as to have sufficient water volume in
the piping between indoor unit and domestic hot water tank.
Locate the domestic hot water tank in a suitable position to
facilitate ease of maintenance; remember access is required to
the electrical box. Refer to the grey-coloured zones indicated in
figure 2.
Provide a connection for the pressure relief valve blow-off and
drain.
To avoid back siphonage it is advised to install a non-return
valve on the water inlet of the domestic hot water tank in
accordance with local and national regulations.

Installing the domestic hot water tank

1 Check if all domestic hot water tank accessories (see
"Accessories" on page 1) are enclosed.
2 Place the domestic hot water tank on a level surface. If required,
adjust the legs at the bottom.
3 Make sure to respect the service space as indicated in figure 2.
RKHWE300A3V3
Domestic hot water tank for air to water heat pump system
4PW50208-1

Connecting the water circuits

Refer to the chapter "Typical application examples" described in the
installation manual delivered with the indoor unit for details on
connecting the water circuits and the motorised 3-way valve.
Make sure to insulate all water pipes and connections.
1 Connect the water inlet and water outlet from the heat
exchanger. Install a 3-way valve as explained in the manual of
the indoor unit.
2 Connect the hot and cold water supply tubes.
Make sure to use galvanic couplings for the connection.
3 Connect the pressure relief valve (field supply, opening pressure
maximum 10 bar).
If a discharge pipe is connected to the pressure relief
device it must be installed in a continuously downward
direction and in a frost-free environment. It must be left
open to the atmosphere.

Field wiring

A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with
relevant local and national legislation.
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
European and national regulations.
The field wiring must be carried out in accordance
with the wiring diagram supplied with the unit and the
instructions given below.
The domestic hot water tank must be earthed via the
indoor unit.
Power circuit and cable requirements
Be sure to use a dedicated power circuit. Never use a
power circuit shared by another appliance.
Use one and same dedicated power supply for the
outdoor unit, indoor unit, backup heater and domestic
hot water tank.
For cable requirements and specifications, refer to "Field wiring" in
the indoor unit installation manual supplied with the RKHBH/X unit.
NOTE Select the power cable in accordance with relevant
local and national regulations.
Installation manual
3